Discussions By Condition: Male sexual conditions

Warts or other STD?

Hi,I am male 30 years old.I had sex with an uninfected partner ( 2 times ) and then we broke... and after 2 weeks i had sex with another uninfected partner. after 1 month i got some black moles on my scrotum... not itchy but makes some times uncomfortable.Does having sex with 2 partners can cause genital warts?I ask my partners to check for HPV and they tested again and clinically they are clean as per Gyn's.can i still get genital warts for having 2 partners?pls help me... how to know what i am getting those black moles on my scrotum?Thanx